ASTM_D_6141_-_14.pdf

Designation:D614114Standard Guide forScreening Clay Portion and Index Flux of Geosynthetic ClayLiner(GCL)for Chemical Compatibility to Liquids1This standard is issued under the fixed designation D6141;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers procedures and test methods that canbe used in the evaluation of the ability of the clay portion of ageosynthetic clay liner to resist change due to exposure toliquids.These liquids may come from a site,or be generated ina laboratory from a site-specific soil.1.2 The scope of this guide is limited to short-term screen-ing and is not intended to replace evaluation procedures thatmeasure a performance property such as EPA 9100,TestMethod D6766,or other suitable ASTM standards as theybecome available.This guide does not address potentialadverse effects of wet-dry cycling.1.3 This guide applies to the clay component of a GCL.Thesynthetic carrier components are covered independently asdescribed in Practice D5322.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD4439 Terminology for GeosyntheticsD5322 Practice for Laboratory Immersion Procedures forEvaluating the Chemical Resistance of Geosynthetics toLiquidsD5887 Test Method for Measurement of Index Flux ThroughSaturated Geosynthetic Clay Liner Specimens Using aFlexible Wall PermeameterD5890 Test Method for Swell Index of Clay Mineral Com-ponent of Geosynthetic Clay LinersD5891 Test Method for Fluid Loss of Clay Component ofGeosynthetic Clay LinersD6072/D6072M Practice for Obtaining Samples of Geosyn-thetic Clay LinersD6766 Test Method for Evaluation of Hydraulic Propertiesof Geosynthetic Clay Liners Permeated with PotentiallyIncompatible Aqueous Solutions2.2 EPA Document:3EPA Test Method 9100 Saturated Hydraulic Conductivity,Saturated Leachate Conductivity,and Intrinsic Permeabil-ity3.Terminology3.1 Definitions:3.1.1 geosynthetic clay liner(GCL),na manufacturedhydraulic barrier consisting of clay bonded to a layer or layersof geosynthetics.3.2 For definitions of other terms used in this guide refer toTerminologies D4439 and D653.3.3 Definitions of Terms Specific to This Standard:3.3.1 test liquid,nwithin this guide,a liquid either sup-plied to,or obtained by the testing laboratory,or generated bythe testing laboratory through prolonged contact of a reagentwith a test soil or other solid material.4.Significance and Use4.1 This guide is intended as a starting place for thosewishing to investigate the chemical compatibility of the clayportion of a geosynthetic clay liner to test liquids.Within thescope of this guide,the clay portion of a geosynthetic clay linerthat is chemically compatible with a test liquid may beexpected to maintain its swelling characteristics.Conversely,the clay portion of a geosynthetic clay liner that is incompatible1This guide is under the jurisdiction ofASTM Committee D35 on Geosyntheticsand is the direct responsibility of Subcommittee D35.04 on Geosynthetic ClayLiners.Current edition approved July 1,2014.Published July 2014.Originally approvedin 1997.Last previous edition approved in 2009 as D6141-09.DOI:10.1520/D6141-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from United States Environmental ProtectionAgency(EPA),WilliamJefferson Clinton Bldg.,1200 Pennsylvania Ave.,NW,Washington,DC 20004,http:/www.epa.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 with a test liquid may be expected not to maintain its swellingcharacteristics.In instances where the compatibility of the clayportion of a GCL is questionable,additional hydraulic testingunder the expected site conditions may be warranted.5.Apparatus5.1 Refer to the appropriate evaluation test standards for adescription of the apparatus necessary to perform those tests.5.2 Containers,manufactured of a chemically resistantmaterial,such as polyethylene or stainless steel,may be neededto prepare and contain test liquid generated from soils.Thecontainers should be sealable to prevent the loss of volatileconstituents.Separate containers will be needed for mixingbatches a